Strong Alethic Pluralism and the Fragmentation of Logical Validity

Truth pluralism has been criticized for its difficulty to vindicate the traditional truth theoretic account of logical validity. In this paper, we argue that an underestimated version of this problem takes form in the fragmentation of logical validity induced by a plurality of truth properties. We briefly present the difficulty differentiating it from the similar one connected with mixed inferences, and we argue that joining forces with logical pluralism does not alleviate the burden from the truth pluralist shoulders. Accordingly, we review some solutions that have been proposed for mixed inferences, assessing whether they can also fix the fragmentation. We show that only some strategies are able to solve both problems.